|Version/Model||S/N||OpenWrt Version Supported||Model Specific Notes|
|RT3883F @ 500MHz (MIPS 74Kc)||32MiB||4MiB||1||Yes||No||Yes||?|
To put the EA-N66 in recovery mode, disconnect power from the router first, then hold the reset button (pinhole button below the EA-N66) while powering on.
The antenna lights will slowly alternate between dim and bright to signal that the router is waiting for a firmware to be uploaded.
The router IP in recovery mode is 192.168.1.1/255.255.255.0 and your PC should be configured as 192.168.1.75/255.255.255.0 (the router sends ARP requests to 192.168.1.75 before accepting a TFTP flash).
Ping 192.168.1.1 should give a response; you can then proceed to upload new firmware using the Firmware Restoration utility or TFTP to 192.168.1.1.
After taking a few minutes to flash, the EA-N66 will reboot itself into the new firmware; if it is not responding over the network, your firmware probably did not boot successfully.
# cat /proc/mtd dev: size erasesize name mtd0: 00400000 00010000 "ALL" mtd1: 00030000 00010000 "Bootloader" mtd2: 00010000 00010000 "Config" mtd3: 00010000 00010000 "Factory" mtd4: 003b0000 00010000 "Kernel"
Note: This may void your warranty!
There are 3 screws hidden below the 3 rubber feet. Unscrew them and gently pry the bottom plate off. Disconnect the 3 antenna connectors and the PCB can be removed.
J12 is the TTL 3.3V serial port and its pinout is labelled on the reverse side of the connector.